CN111609336A

CN111609336A - Desk lamp

Info

Publication number: CN111609336A
Application number: CN202010609984.9A
Authority: CN
Inventors: 隋中华; 王跃平; 王耀海
Original assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Current assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2020-09-01

Abstract

The invention discloses a desk lamp, which comprises a base; the lamp post, one end of the said lamp post is assembled to the said base; the lamp holder, the lamp holder includes casing, light source and face guard, the casing install in the other end of lamp pole, the face guard with the casing is connected, and encloses into and hold the chamber, the light source install in hold the chamber, first bleeder vent has been seted up to the casing, the second bleeder vent has been seted up to the face guard, first bleeder vent with the second bleeder vent all with hold the chamber intercommunication. By the technical scheme, the problem that the service life of the light source assembly and the desk lamp is shortened due to poor heat dissipation performance of the light source assembly in the existing desk lamp can be solved.

Description

Desk lamp

Technical Field

The invention relates to the technical field of lighting equipment, in particular to a desk lamp.

Background

The desk lamp can provide a better lighting effect in the learning and working processes of a user and is convenient to move. In the course of the work of desk lamp, the light source subassembly can produce certain heat, if the heat that the light source produced can not be timely distribute away, can produce adverse effect to light source module's continuation use, shortens the life of light source subassembly and desk lamp.

Disclosure of Invention

The invention discloses a lamp, which aims to solve the problem that the service lives of a light source component and a desk lamp are shortened due to poor heat dissipation performance of the light source component in the current desk lamp.

In order to solve the problems, the invention adopts the following technical scheme:

a desk lamp, comprising:

a base;

the lamp post, one end of the said lamp post is assembled to the said base;

the lamp holder, the lamp holder includes casing, light source and face guard, the casing install in the other end of lamp pole, the face guard with the casing is connected, and encloses into and hold the chamber, the light source install in hold the chamber, first bleeder vent has been seted up to the casing, the second bleeder vent has been seted up to the face guard, first bleeder vent with the second bleeder vent all with hold the chamber intercommunication.

The technical scheme adopted by the invention can achieve the following beneficial effects:

in the desk lamp disclosed by the embodiment of the invention, the lamp cap comprises a shell, a light source and a face mask, the shell is arranged on the base through the lamp post, the face mask is connected with the shell to form a containing cavity for installing the light source, the shell is provided with a first air hole, the face mask is provided with a second air hole, and the first air hole is communicated with the second air hole through the containing cavity, so that gas outside the desk lamp can enter and exit the containing cavity through the second air hole and the first air hole, and heat generated by the work of the light source can be taken out of the containing cavity in the process of entering and exiting the containing cavity, so that the integral heat dissipation efficiency of the desk lamp is improved, and the desk lamp is ensured to have.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a desk lamp disclosed in the embodiment of the present invention;

fig. 2 is a schematic structural diagram of a desk lamp according to another embodiment of the invention;

FIG. 3 is an exploded view of a portion of a desk lamp according to an embodiment of the invention

Fig. 4 is a schematic cross-sectional view of a partial structure of a desk lamp according to an embodiment of the disclosure;

FIG. 5 is an exploded view of a lamp post, a connecting rod and a rotating shaft of the desk lamp according to the embodiment of the invention;

fig. 6 is a schematic structural view of the desk lamp according to the embodiment of the present invention, when the first limiting portion and the second limiting portion limit each other;

fig. 7 is a schematic structural view of the desk lamp according to the embodiment of the invention, in which the first position-limiting portion and the second position-limiting portion of the rotation shaft are in a position-limiting state in another direction.

Description of reference numerals:

1-a base,

2-lamp post,

3-lamp cap, 31-shell, 311-first air vent, 312-shell body, 313-connecting rod, 32-light source, 321-base plate, 322-luminous body, 33-face mask, 331-second air vent, 332-mounting hole, 333-cover body, 334-outer edge, 34-guide plate, 35-control module,

4-heat dissipation part, 41-heat dissipation body, 42-heat dissipation piece,

5-light distribution lens,

61-reflection cup, 62-fixed part,

7-a lead wire,

8-rotating shaft, 81-first fixing piece, 82-second fixing piece, 83-connecting piece, 84-first limiting part and 85-second limiting part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in fig. 1-7, the embodiment of the invention discloses a desk lamp, which comprises a base 1, a lamp post 2 and a lamp cap 3, wherein the base 1 is a mounting base structure and a supporting structure of the whole desk lamp, and both the lamp post 2 and the lamp cap 3 can be directly or indirectly mounted on the base 1 to form the whole desk lamp.

Wherein, base 1 can be made by hard materials such as metal or plastics to guarantee that base 1 can provide stable supporting effect for whole desk lamp, base 1 can be rectangular structure or circular structure, and base 1 size in all directions also can be confirmed according to actual demand, does not limit here.

The lamp post 2 can also be made of metal or plastic and other materials, and the lamp post 2 can be a single-section cylindrical rod-shaped structural member, or the lamp post 2 can also be a multi-section structure. One end of the lamp post 2 is assembled on the base 1, optionally, the lamp post 2 and the base 1 may form a fixed connection relationship by welding or the like, or may form a hinged relationship by means of a bolt assembly, so that the lamp post 2 and the base 1 can rotate with each other, and the orientation of the lamp holder 3 installed at the other end of the lamp post 2 can be adjusted. Or, the lamp post 2 and the base 1 can be connected with each other in a ball hinge manner, which can further improve the range and amplitude of relative rotation between the lamp post 2 and the base 1, thereby further improving the lighting effect of the lamp holder 3.

In addition, the lamp pole 2 can be a hollow structural member, and in this case, the lead 7 connected with the lamp holder 3 can be installed in the lamp pole 2, so that the condition that the lead is exposed is prevented, and the safety of the whole desk lamp is improved.

The lamp holder 3 comprises a shell 31, a light source 32 and a face cover 33, wherein the shell 31 is installed at one end of the lamp post 2, which is far away from the base 1, the shell 31 can be made of a material with relatively high structural strength, so that the shell 31 can provide stable supporting effect and protection effect for the light source 32 and the face cover 33, and the service life of the lamp holder 3 is prolonged. For example, the housing 31 may be made of a metal material, which also provides the housing 31 with good heat conduction and dissipation effects, so that the heat dissipation efficiency of the lamp cap 3 is relatively high.

The light source 32 can be LED lamp beads or LED patches and the like, and the light source 32 can be externally connected with a power supply through the lead 7 to be lightened under the power-on condition. Alternatively, the light source 32 is fixed to the housing 31 or the face mask 33, and the light source 32 is caused to emit light in the direction of the face mask 33 by directing the light source 32 toward the face mask 33. In addition, the lamp holder 3 can be further provided with a control module 35 to provide a control function for the desk lamp, so that the desk lamp is guaranteed to have good controlled performance and safety performance.

The face guard 33 is connected with the casing 31, and encloses into and hold the chamber, and the light source 32 is installed in holding the chamber for face guard 33 and casing 31 can provide better guard action for light source 32, and can also prevent to appear being scalded or even the condition of electrocuteeing because of the user touches light source 32 by mistake. In particular, the shape of the face mask 33 may correspond to the shape of the housing 31, which may improve the integrity of the sealed cavity formed by the two, so as to further improve the safety of the whole desk lamp. The mask can be made of transparent materials such as plastics to ensure that light emitted by the light source 32 installed in the accommodating cavity can penetrate through the mask 33 and penetrate out of the desk lamp. The mask 33 and the shell 31 can be fixedly connected in an adhesion mode, or can be detachably fixedly connected by adopting a clamping or threaded connector, so that the later maintenance and repair of the desk lamp can be facilitated.

In addition, the shell 31 is provided with a first vent 311, the face mask 33 is provided with a second vent 331, specifically, the first vent 311 may be disposed at any position of the shell 31, the second vent 331 may also be disposed at any position of the face mask 33, and the respective shapes, sizes and numbers of the first vent 311 and the second vent 331 may be determined according to actual requirements, which is not limited herein. Through making first bleeder vent 311 and second bleeder vent 331 all with hold the chamber intercommunication for the inner space of whole lamp holder 3, hold the chamber promptly and can communicate each other with the space outside the lamp holder 3, thereby make gaseous can hold the intracavity and hold the chamber outside carry out gas exchange.

In the desk lamp disclosed by the embodiment of the invention, the lamp cap comprises a shell 31, a light source 32 and a face cover 33, the shell 31 is arranged on the base 1 through the lamp post 2, the face cover 33 is connected with the shell 31 to form an accommodating cavity for installing the light source 32, a first air hole 311 is arranged on the shell 31, a second air hole 331 is arranged on the face cover 33, and the first air hole 311 is communicated with the second air hole 331 through the accommodating cavity, so that gas outside the desk lamp can enter and exit the accommodating cavity through the second air hole 331 and the first air hole 311, and heat generated by the work of the light source 32 can be taken out of the accommodating cavity in the process of entering and exiting the accommodating cavity, so that the overall heat dissipation efficiency of the desk lamp is improved, and the desk lamp is ensured to have a.

Optionally, the lamp post 2 is disposed obliquely with respect to the height direction of the desk lamp, in this case, the irradiation area of the lamp cap 3 can be enlarged, and the existence of the lamp post 2 can be prevented as much as possible from generating a shielding effect on the pipeline emitted by the light source 32. Certainly, as above, can make the angularly adjustable between lamp pole 2 and the base 1 to make the user can adjust the contained angle between lamp pole 2 and the base 1 in a flexible way according to actual factors such as the laying position of desk lamp and user demand, promote the user experience of desk lamp.

Optionally, the first air hole 311 and the second air hole 331 are arranged along the height direction of the desk lamp, that is, in the process of designing the first air hole 311 and the second air hole 331, a certain height difference can be provided between the first air hole 311 and the second air hole 331, and since the air pressures in the areas with different heights are different, in the use process of the desk lamp, the air can automatically enter the accommodating cavity from the second air hole 331 by the action of the external air pressure, and the air in the accommodating cavity is discharged from the first air hole 311, so that the heat dissipation efficiency of the desk lamp can be further improved; and, because the gas that gets into from second bleeder vent 331 and hold the chamber can absorb the heat that the light source produced, thereby also relatively higher by the temperature of combustion gas from first bleeder vent 311, the pressure of the gas that the temperature is high is less usually, under the less circumstances of atmospheric pressure in the position department outside first bleeder vent 311, can make the lamp holder 3 of desk lamp produce certain suction effect, thereby promote the external gas to get into from second bleeder vent 311 and hold the chamber, and then can further promote the exchange efficiency who holds the gas in the chamber and hold the gas outside the chamber, further promote the radiating efficiency of desk lamp.

Based on the above, the whole of the face mask 33 can be located below the casing 31, in which case, a certain height difference can be basically ensured between the first vent 311 and the second vent 331 no matter what the respective positions of the two vents are; if a part of the face mask 33 is not completely located under the shell 31, the position of the first vent hole 311 on the shell 31 and the position of the second vent hole 331 on the face mask 33 can be selected according to actual conditions, so as to ensure a certain height difference between the first vent hole 311 and the second vent hole 331.

Further, can make first bleeder vent 311 be located the one end that the direction of height of casing 31 edge desk lamp deviates from face guard 33, under the condition that above-mentioned technical scheme was adopted in the design of first bleeder vent 311, no matter what kind of position that second bleeder vent 331 is located on face guard 33, can guarantee basically that the height of first bleeder vent 311 is higher than second bleeder vent 331, thereby guarantee to have certain difference in height between the two all the time, and then make gas can flow in and outside holding the chamber automatically, the heat that is located and holds the intracavity that makes light source 32 produce is taken away from to holding outside the chamber, guarantee that the temperature in the environment that light source 32 is located is lower, promote the life of light source 32 and whole desk lamp.

Or, the second air hole 331 may be located at one end of the face mask 33 away from the shell 31 in the height direction of the desk lamp, and when the second air hole 331 adopts the above technical solution, the second air hole 331 may also be located below the first air hole 311.

Alternatively, the first air hole 311 and the second air hole 331 are disposed opposite (or opposite) to each other, that is, the first air hole 311 may be disposed at one end of the casing 31 departing from the mask 33 along the height direction of the desk lamp, and the second air hole 331 may be disposed at one end of the mask 33 departing from the casing 31 along the height direction of the desk lamp. In a colloquial manner, the first ventilation hole 311 may be provided at the top of the lamp cap 3, and the second ventilation hole 331 may be provided at the bottom of the lamp cap 3.

By adopting the technical scheme, under the condition that the size of the desk lamp is not changed, the height difference between the first air hole 311 and the second air hole 331 can be maximized, so that the efficiency of air flowing inside and outside the accommodating cavity is maximized, and even if the lamp cap 3 is in a certain inclined state, the height difference between the first air hole 311 and the second air hole 331 can be basically ensured.

Further, the light source 32 may extend to the side wall of the accommodating chamber, in which case, a through hole may be formed on the light source 32, especially on the substrate 321 of the light source 32, which may also ensure that gas can flow between the second vent 331 and the first vent 311.

Preferably, the size of the light source 32 can be smaller than that of the accommodating cavity, so that a gap is formed between the light source 32 and the side wall of the accommodating cavity, so as to ensure that the gas can flow between the second vent 331 and the first vent 311, and in the case of adopting the above technical solution, the gas can flow from any direction of the light source 32 to the two opposite sides of the light source 32, so that the heat dissipation effect at any position on the light source 32 is relatively good and relatively even, and the light source 32 is further ensured to have a relatively long service life.

Further, mounting hole 332 has been seted up on face guard 33, and light source 32 can set up towards mounting hole 332, and the desk lamp still includes grading lens 5, and light source 32 can be the pointolite, grading lens 5 set up in the play plain noodles of light source 32, and grading lens 5 can install in mounting hole 332, can provide better protection and isolated effect for light source 32 on the one hand, and on the other hand can also be the light distribution for light source 32 with the help of grading lens 5, makes the homogeneity and the illumination effect homogeneous phase of light source 32 relatively higher. Specifically, the shape and size of the light distribution lens 5 may be the same as those of the mounting hole 332, so that the fitting relationship between the light distribution lens 5 and the mounting hole 332 is relatively close, and the light distribution lens 5 may be fixed at the mounting hole 332 by adhesion. Optionally, the surface of the light distribution lens 5 is provided with at least one anti-glare edge, so that light emitted by the light source 32 after passing through the light distribution lens 5 is softer, stronger glare is not generated, and the illumination effect of the desk lamp is further improved.

Optionally, the desk lamp further includes a heat dissipating portion 4, the heat dissipating portion 4 includes a heat dissipating body 41 and a heat dissipating fin 42, and the light source 32 is attached to the heat dissipating body 41, so that heat generated by the operation of the light source 32 can be firstly transferred to the heat dissipating body 41, thereby preventing the heat from accumulating on the light source 32, and the heat generated by the light source 32 is transferred by means of the heat dissipating body 41, thereby ensuring that the real-time temperature of the light source 32 is relatively low. The heat dissipation sheet 42 is connected to the periphery of the heat dissipation main body 41, and the heat dissipation sheet 42 is located between the light source 32 and the housing 31, on the one hand, the heat of the light source 32 and the heat dissipation main body 41 can be further transferred by means of the heat dissipation sheet 42, on the other hand, the heat dissipation sheet 42 can increase the whole heat dissipation area of the heat dissipation part 4, so that the heat on the heat dissipation main body 41 and the heat dissipation sheet 42 can be more quickly and thoroughly diffused between the housing 31 and the face mask 33, namely, in the accommodating cavity, and then is dissipated to the outside of the accommodating cavity through the first air hole 311 and the second air hole 331 along with the gas in the accommodating cavity.

Specifically, the heat dissipation portion 4 may be made of a material with a good heat conductivity, such as metal or graphite, the shape and size of the heat dissipation main body 41 may be selected according to the space inside the accommodating cavity, and optionally, the heat dissipation portion 4 may be formed by die casting a metal material, so that the heat dissipation main body 41 and the heat dissipation fins connected to each other are formed together, which makes the connection reliability between the heat dissipation main body 41 and the heat dissipation fins 42 relatively high, and further may ensure that the heat dissipation main body 41 and the heat dissipation fins 42 have a high heat conductivity efficiency. Wherein, light source 32 can adopt heat-conducting glue to fix on heat dissipation main part 41, when guaranteeing to have higher fixed connection effect and heat conduction effect between light source 32 and the heat dissipation main part 41, can also prevent that light source 32 and heat dissipation main part 41 from switching on each other, promotes the security performance of desk lamp. More specifically, the light source 32 and the heat sink 42 may be respectively located on two adjacent surfaces of the heat dissipating body 41, preventing the light source 32 and the heat sink 42 from interfering with each other.

Further, a plurality of heat dissipation fins 42 may be provided to further increase the overall heat dissipation area of the heat dissipation portion 4 and improve the heat dissipation efficiency of the heat dissipation portion 4; by arranging the plurality of fins 42 at intervals around the heat dissipating body 41 so that air can flow between any adjacent two fins 42 to take away heat from the fins 42, the plurality of fins 42 are arranged at intervals around the heat dissipating body 41, and the size of the space occupied by the plurality of fins 42 can also be reduced.

More specifically, the shapes and sizes of the plurality of heat dissipation fins 42 may be correspondingly the same, and the angles of the mutual intervals between any two adjacent heat dissipation fins 42 may be all the same, so that the heat dissipation efficiency at any position on the heat dissipation portion 4 is substantially the same, and the overall heat dissipation performance of the heat dissipation portion 4 is improved.

Further, the heat dissipation fins 42 can be parallel to the height direction of the desk lamp, and further, in the using process of the desk lamp, in the process that gas flows between the first air holes 311 and the second air holes 331, the heat dissipation fins 42 basically do not block the flow path of the gas, so that the gas can smoothly flow inside and outside the accommodating cavity, and in the case of adopting the technical scheme, the gas flowing between the first air holes 311 and the second air holes 331 can pass through the surface of each heat dissipation fin 42, so that the heat dissipation efficiency of the heat dissipation fins 42 can be further improved.

Further, the mask 33 includes a cover body 333 and an outer edge 334, the cover body 333 is disposed toward the light source 32, and the outer edge 334 is disposed around the cover body 333, in the case of adopting the above technical solution, both the cover body 333 and the outer edge 334 can provide a better protection effect for the light source 32, the outer edge 334 is disposed around the cover body 333, and the outer edge 334 is located on one side of the cover body 333 facing the casing 31, so that the outer edge 334, the cover body 333 and the casing 31 can enclose an accommodating cavity, and a better protection effect is provided for the light source 32, and by locating the second air hole 331 between the cover body 333 and the outer edge 334, since the cover body 333 is disposed facing the light source 32, the second air hole 331 is located on the periphery of the light source 32, and further, the matching relationship between the air entering or exiting the accommodating cavity from the second air hole 331 and the light source 32 is better, and more heat on the light source.

Specifically, the cover body 333 and the outer rim 334 may be separately installed on the housing 31, in which case the second airing hole 331 is a hole having a ring structure. Alternatively, the cover body 333 and the outer rim 334 may be connected to each other through a connecting strip or a connecting plate, so that the mask 33 has a unitary structure, and in this case, the connecting strip or the connecting plate may divide the space between the cover body 333 and the outer rim 334 into a plurality of holes separated from each other, each of the plurality of holes is the second vent 331, and the plurality of holes may be the same size or different sizes.

Optionally, the cover body 333 and the outer edge 334 are connected through the baffle 34, so that the cover body 333 and the outer edge 334 are connected into a whole, the baffle 34 is disposed in the accommodating cavity, the baffle 34 is prevented from occupying a space outside the desk lamp, the use condition of the desk lamp is limited, and under the condition that the baffle 34 is located outside the accommodating cavity, the condition that the baffle 34 scratches a user may exist. The baffles 34 may be plate-shaped structural members, the size of each baffle may be determined according to parameters such as the size of the space between the cover body 333 and the outer rim 334, the cover body 333, the outer rim 334, and the baffles 34 may be made of plastic, and the cover body 333 and the outer rim 334 may be connected into a whole by the baffles 34 in a hot melting manner, in order to improve the connection reliability between the cover body 333 and the outer rim 334, the number of the baffles 34 may be multiple, the multiple baffles 34 are arranged around the cover body 333, and the angles of the space between any two adjacent baffles 34 may be equal.

Also, the guide plate 34 may be parallel to the axial direction of the second vent 331, in which case the guide plate 34 not only serves as a connection structure between the cover body 333 and the outer rim 334, but also provides a guiding function for the gas flowing between the first vent 311 and the second vent 331, thereby further improving the efficiency and smoothness of the gas flowing between the first vent 311 and the second vent 331.

Optionally, the number of first bleeder vents 311 is a plurality of to increase lamp holder 3 and the external efficiency of carrying out gas exchange, and be radial ejection through making a plurality of first bleeder vents 311, make a plurality of first bleeder vents 311's distribution comparatively even, thereby make and hold intracavity everywhere gas homoenergetic and exchange with the external world, lamp holder 3's heat transfer process is comparatively thorough. More specifically, each of the first air holes 311 may have a linear long hole structure, and each of the first air holes 311 extends from a central area to an edge of the casing 31, so that the first air holes 311 radially emit light are formed.

Under the condition that the number of the first air holes 311 is multiple, in order to further improve the efficiency of exchanging air inside and outside the accommodating cavity, under the condition that the number of the second air holes 331 is one or less, the size of the second air holes 331 can be relatively larger to ensure that the air has larger flow, or the number of the second air holes 331 can be more, and the second air holes 331 are uniformly distributed on the face mask 33, so that the heat exchange process at each position in the lamp head 3 can be ensured to be thorough.

As described above, the light source 32 may be a point light source 32, and in order to further improve the illumination effect of the light source 32, optionally, the table lamp disclosed in the embodiment of the present invention may further include a reflective cup 61, the reflective cup 61 is a flared structure, the light source 32 is installed at one end of the reflective cup 61, and the other end of the reflective cup 61 faces the mask 33, so that the irradiation area of the light source 32 is further enlarged by the reflective cup 61, and the illumination uniformity of the light source 32 is further improved. The reflector cup 61 may be made of plastic and the inner or outer surface of the reflector cup 61 is coated with a reflective coating to provide a reflective effect to the light. The reflecting cup 61 may be attached to the housing 31 by a member such as a bolt, and when the heat dissipating unit 4 is included in the table lamp, the reflecting cup 61 may be fixed to the heat dissipating unit 4.

The light source 32 may include a substrate 321 and a light emitter 322, the light emitter 322 is disposed on one side of the substrate 321, and the substrate 321 may be externally connected to a power source through a wire 7, so that the light emitter 322 is illuminated. One end of the reflection cup 61 departing from the mask 33 is provided with a fixing part 62, the fixing part 62 has an installation cavity, the light source 32 is arranged in the installation cavity, and in the direction perpendicular to the height direction, the substrate 321 is in spacing fit with the fixing part 62, so that the fixed connection relation between the light source and the reflection cup 61 is stable, and the installation difficulty of the light source 32 can be reduced to a certain extent, as described above, the reflection cup 61 can be installed on the shell 31 or the heat dissipation part 4 through a bolt and other parts. In addition, the shape and size of the fixing portion 62 can be determined according to the substrate 321 of the light source 32, so that the fixing portion 62 can provide a good limiting effect for the substrate 321.

As above, lamp pole 2 and base 1 can adopt articulated mode interconnect to promote the illumination scope of desk lamp, promote user experience. Further, the housing 31 may include a housing body 312 and a connection rod 313, the housing body 312 is fixedly connected to the connection rod 313, the desk lamp disclosed in the embodiment of the present invention further includes a rotation shaft 8, the connection rod 313 and the lamp post 2 are pivotally connected through the rotation shaft 8, in this case, the connection rod 313 and the lamp post 2 can rotate relatively, so that the lamp post 2 and the lamp holder 3 can also rotate relatively, and further, in the use process of the desk lamp, not only the orientation of the lamp holder 3 can be changed by rotating the lamp post 2, but also the orientation of the lamp holder 3 can be changed by rotating the lamp holder 3, so that the selection range of the orientation of the lamp holder 3 is wider, and the user experience of the desk lamp is further improved.

Specifically, the case body 312 and the connection bar 313 may be formed in an integrally molded manner, so that the connection reliability between the case body 312 and the connection bar 313 is high. In the case where the connection rod 313 is provided, mutual interference between the lamp post 2 and the housing body 312 is not easily generated, so that the rotation range between the base 3 and the lamp post 2 is relatively large. The rotating shaft 8 can be a common structural member with a hinging function, such as a bearing, and the selection of the rotating shaft can be determined according to actual requirements.

Alternatively, as shown in fig. 5, 6 and 7, the rotating shaft 8 may include a first fixing element 81, a second fixing element 82 and a connecting element 83, the first fixing element 81 is in limited fit with the connecting rod 313 in the circumferential direction around the connecting element 83, the second fixing element 82 is in limited fit with the lamp post 2 in the circumferential direction around the connecting element 83, so that the first fixing element 81 and the second fixing element 82 can also rotate synchronously during the relative rotation of the lamp post 2 and the connecting rod 313, and vice versa, the second fixing element 82 is in limited fit with the lamp post 2 due to the mutual limitation of the first fixing element 81 and the connecting rod 313, and the lamp post 2 and the connecting rod 313 can also rotate relatively during the relative rotation of the first fixing element 81 and the second fixing element 82.

Specifically, the first fixing member 81 and the connecting rod 313, and the second fixing member 82 and the lamp post 2 can form a limit fit relation in the circumferential direction of the connecting member 83 in various ways. Taking the first fixing element 81 and the connection rod 313 as an example, the connection rod 313 may be formed with a through hole, and the first fixing element 81 is inserted into the through hole of the connection rod 313, and by providing a position-limiting structure such as a position-limiting block or a position-limiting pin on the periphery of the first fixing element 81, and providing a matching structure such as a position-limiting groove or a position-limiting hole in the through hole of the connection rod 313, so that the position-limiting structure extends into the matching structure, the first fixing element 81 and the connection rod 313 may form a stable position-limiting matching relationship in the circumferential direction of the connection element 83, and the position-limiting relationship between the second fixing element 82 and the lamp pole 2 may be formed in a manner similar to or the same.

And, the connection member 83 passes through the second fixing member 82 and is screw-coupled with the first fixing member 81 to provide frictional damping to the lamp post 2 and the connection rod 313. Under the circumstances that connecting piece and first mounting 81 locked each other, the clearance between lamp pole 2 and the connecting rod 313 is less relatively, and the mutual extruded condition still can appear in the two even to make and form frictional damping between lamp pole 2 and the connecting rod 313, thereby make and basically can not take place relative rotation under the effect of not receiving the external force between lamp pole 2 and the connecting rod 313, guarantee that the desk lamp can provide stable illuminating effect.

In order to limit the relative rotation angle between the lamp holder 3 and the lamp post 2, in the rotating shaft 8 of the desk lamp disclosed in the above embodiment, the first fixing member 81 is provided with the first limiting portion 84, the second fixing member 82 is provided with the second limiting portion 85, and the first limiting portion 84 and the second limiting portion 85 rotate relatively between 0 ° and 180 ° in the circumferential direction around the connecting member 83, so as to ensure that the lamp holder 3 and the lamp post 2 do not rotate excessively.

More specifically, in the circumferential direction of the connecting member 83, the sum of angles by which both the first stopper portion 84 and the second stopper portion 85 pass may be 180 °, and in this case, the maximum angle that can be rotated relative to each other is 180 °.

Alternatively, the structure of the first fixing element 81 for limiting the mutual position with the connecting rod 313 may also be the first limiting portion 84, in this case, a through hole is formed on the connecting rod 313, and the structure of the through hole is matched with the first limiting portion 84, so that the first limiting portion 84 can limit the mutual position with the hole wall of the through hole after extending into the through hole, and the first fixing element 81 and the connecting rod 313 are in a limiting relationship with each other. And, a part of the first position-limiting portion 84 extends from one side of the through hole to the other side of the through hole, that is, a part of the first position-limiting portion 84 is located outside the through hole of the connection rod 313 and on one side of the connection rod 313 facing the lamp post 2, so as to be matched with the second fixing element 82.

Similarly, the second position-limiting portion 85 of the second fixing element 82 may also be disposed by adopting the embodiments given in the above embodiments, in this case, a part of the second position-limiting portion 85 is located in the through hole of the lamp post 2 and is in position-limiting fit with the lamp post 2 in the circumferential direction of the connecting element 83, and another part of the second position-limiting portion 85 extends out of the through hole of the lamp post 2 and is located between the lamp post 2 and the connecting rod 313 to be in mutual fit with the first position-limiting portion 84.

In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A desk lamp, comprising:

a base (1);

the lamp post (2), one end of the lamp post (2) is assembled on the base (1);

lamp holder (3), lamp holder (3) include casing (31), light source (32) and face guard (33), casing (31) install in the other end of lamp pole (2), face guard (33) with casing (31) are connected, and enclose into and hold the chamber, light source (32) install in hold the chamber, first bleeder vent (311) have been seted up in casing (31), second bleeder vent (331) have been seted up in face guard (33), first bleeder vent (311) with second bleeder vent (331) all with hold the chamber intercommunication.

2. The desk lamp according to claim 1, wherein the first vent (311) is located at an end of the housing (31) facing away from the mask (33) in a height direction of the desk lamp, and/or the second vent (331) is located at an end of the mask (33) facing away from the housing (31) in the height direction of the desk lamp.

3. The desk lamp of claim 1, further comprising a heat dissipating part (4), wherein the heat dissipating part (4) comprises a heat dissipating body (41) and a heat dissipating fin (42), the light source (32) is attached to the heat dissipating body (41), the heat dissipating fin (42) is connected to the periphery of the heat dissipating body (41), and the heat dissipating fin (42) is located between the light source (32) and the housing (31).

4. The desk lamp of claim 3, wherein the number of the heat radiating fins (42) is plural, and the plural heat radiating fins (42) are arranged at intervals around the heat radiating body (41).

5. The desk lamp of claim 1, wherein the mask (33) comprises a cover (333) and an outer rim (334), the cover (333) being disposed toward the light source (32), the outer rim (334) being disposed around the cover (333), and the second vent (331) being located between the cover (333) and the outer rim (334).

6. The desk lamp of claim 5, wherein the cover body (333) and the outer rim (334) are connected by a deflector (34), the deflector (34) is disposed in the accommodating cavity, and the deflector (34) is parallel to the axial direction of the second vent (331).

7. The desk lamp as claimed in claim 1, wherein the number of the first ventilation holes (311) is plural, and the plural first ventilation holes (311) are radially projected.

8. The desk lamp as claimed in claim 1, wherein the housing (31) comprises a housing body (312) and a connecting rod (313), the housing body (312) is fixedly connected with the connecting rod (313), the desk lamp further comprises a rotating shaft (8), and the connecting rod (313) and the lamp post (2) are pivotally connected through the rotating shaft (8).

9. The desk lamp of claim 8, wherein the rotating shaft (8) comprises a first fixing part (81), a second fixing part (82) and a connecting part (83), the first fixing part (81) is in limited fit with the connecting rod (313) in the circumferential direction around the connecting part (83), the second fixing part (82) is in limited fit with the lamp pole (2) in the circumferential direction around the connecting part (83), and the connecting part (83) penetrates through the first fixing part (81) and is in threaded connection with the second fixing part (82) so that the lamp pole (2) and the connecting rod (313) have friction damping;

the first fixing piece (81) is provided with a first limiting part (84), the second fixing piece (82) is provided with a second limiting part (85), and the first limiting part (84) and the second limiting part (85) rotate relatively between 0-180 degrees in the circumferential direction around the connecting piece (83).

10. The desk lamp of claim 1, wherein the lamp post (2) is disposed obliquely to a height direction of the desk lamp.